The unequivocal proof that DNA is the genetic material came from experiments conducted by
[1 mark]
A
Hershey and Chase
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B
Frederick Griffith
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C
Watson and Crick
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D
Meselson and Stahl
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Solution
The correct option is A Hershey and Chase Alfred Hershey and Martha Chase conducted experiments using bacteriophages to understand whether it was the DNA or the proteins that were the genetic material. These experiments provided unequivocal proof that DNA is the genetic material.
Frederick Griffith conducted experiments showing non-pathogenic bacteria or R-strain (Streptococcus pneumoniae) transformed into pathogenic strains S-strain and put forth the transforming principle about the DNA.
Watson and Crick put forward the double helical structure of the DNA.
Meselon and Stahl explained the semi conservative nature of DNA replication using the bacteria Escherichia coli.